Basic Deckbuilding Tips

Use 18 to 20 Shrines: You want one shrine to play each turn, and not more than that. Each shrine above one in your hand is a dead card that turn. You'll use Divine Offering to manage the shrines. Somewhere between 18 and 20 shrines is best in a 60 card deck. You'll only miss DO occasionally, and you'll avoid having too many shines. Rule of thumb: 18 shrines in a very aggressive aggro deck with plenty of card draw, 20 shrines if you don't have much card draw or are using a a number of special shrines (Trigon, Pandemonium) or skill shrines. Most of the time 19 shrines is best.

Keep it at 60 cards:Some cards in your deck are better than others, and you want those cards more often. Limit yourself to 60 cards so you can draw them.

Pick a Win Condition: How are you going to win the game? Do you plan to beat down your opponent with as much damage as possible? Are you milling them out of cards? Do you want to lock down their board? The most effective decks have a win condition and stick to it. In Spellweaver, there are five possible ways to win:

Reduce your opponent to 0 health. This is - by far - the most common win condition.

Heal yourself to 40 health.

Mill your opponent until they no longer have any cards

Trigger a condition that wins the game for you (currently there are two cards that allow this - Grand Reunion and the Triangelica)

Your opponent runs out of time. You can't control how much time your opponent takes, though, so your win condition should be one of the above.

Figure out the core cards to achieve your win condition: There are lots of ways to reduce your opponent to 0 health. Aggro decks can do it. So can control decks. They have different paths to get there, which usually revolve around some key cards. Are you going to overwhelm your opponent with soldiers, backed up with buffs from Master Tactician? Do you want to counter everything your opponent does, then slap down an Elder Red Dragon, a Johrail's Silencer, and burn their life total? Maybe you like making a bunch of huge Steel Sentients and swinging for 50 damage on the last turn. It doesn't matter what your core cards are - but you need to have some.

If you're going to win by killing your opponent - pick your archetype: Spellweaver has a few common archetypes, and the best decks embrace one of them. Aggro Decks aim to convert all their resources (cards, mana, life) into damage as quickly as possible. Value Midrange decks aim to play fewer, bigger, and more resilient creatures and high value removal spells; they aim to shut down aggro and get in "under" control. Spread midrange, an archetype made possible by Spellweaver's unique mechanics, is slower than aggro; it's gameplan is to overwhelm any opponent by going "wide," building a board that eventually becomes overwhelming. Control decks try to answer everything an opponent does, before triggering some key cards/conditions to win the game.